Keytruda is immunotherapy and not chemo. It is the top tier of immunotherapies for many cancers. Have you researched any of the terms and new vocabulary related to your cancers? It might help your anger and fear reduce and make you feel more in control. We lose so much when we have cancer. But knowledge is power because we at least know what things mean! It does make a difference. I have also found that knowledge reduces fear. Have you?